Friday, November 30, 2012

DSN: Service unavailable (sendmail) (linux)

Error

sendmail does not send outbound emails due to the following errors


Unable to qualify my own domain name (HOSTNAME) -- using short name

qAU1XDDZ007482: qAU1XODZ007484: DSN: Service unavailable


Solution


1- Add a proper host name

sudo hostname domain.com



2- Change hosts file ( edit /etc/hosts )

sudo nano /etc/hosts

IP.IP.IP.IP domain.com


3- Restart sendmail

sudo service sendmail restart




2 comments:

  1. yaa that could be reason but apart from this your IP could be blacklisted,

    WR

    Subhash Chandra BIJARNIYA

    ReplyDelete
  2. i am facing same issue , whenever i send email through my sendmail MTA i got this error and i can't set host/ip for 000 email RCPT address, do you have solution?

    ReplyDelete